Leopold kleb



. L.. KLEE.

Mash Tub.

Patented lune 16, '1868.

Zr'wesss."

W Mig? N. Prrins. Plwto-Lahnwher. washingtnn, D4 C.

@uitrit tetes @anni ffice,

LEOPOLD KLEE, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO HIMSELF AND CHARLES T. HERROSEE, OF SAME PLAGE.

Letters Patent No. 78,973, dated June 1G, 1868.

IMPRQVBMBNT IN MASH-russ.

TO ALL WHOM -IT MAY CONGERN:

Be it known that I, LEOPOLD KLEE, oi`- Pittsburg, in thecounty of Allegheny, and State of Pennsylvania, have invented Aa new and useful Improvement in Mash-Tubs; and I do hereby declare that thc following'is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same,

reference heinghacl to the accompanying drawings, forming part of this specication, in which Figure l represents a vertical sectional elevation of my improved mash-tub.

Figure Zrepresents a plan ofthe cover.

Figures 3 to 5 represen-t modifications `of my improvement.

Similar letters of reference indicate corresponding parts.

The nature of this invention'relates to improvements in mash-tubs for preparing mash for brewing and other purposes, whereby it is designedto provide a more improved tub for the purpose than those now in use.

It consists in the combination of twovessels, one within the other, having espace between them.

Also in the arrangement of a cover, common to both, arranged so as to hermetically seal the interior of the tub and the space between the two parts.. ,Y

, Also, in an arrangement of means for introducing steam or other l1eating-medium to the interior, and also to thespace between the two parts for heating the mash i Also, a provision of means for the application of compressedair to the mash, to facilitate the preparation ofthe mash and discharge of the product.

Also, in several,l combinations hereinafter specified, and

Y Also, in several modications of some' of my improvements, as will be more fully described on reference to i the accompanying drawings.

The Want ot' amore perfect apparatus for meshing is being felt by all engaged in the manufacture of ferd mented liquors, for the reason that those `now in use give to the operator no means of contaolling the temperai ture in the same, thus endangering the result of the process by a far greater chance of introducing the ruinous lactic acid, and to avoidthese-defects is the object of my invention.

My invention is also designed t'o provide a maslbtub that may be readily opened or hermetically closed, and that may be heated from all the exterior portions, as well as to introduce the heatinto the same above the mash, and from which thc-wort and the grains may be discharged through-the bottom with great facility.

A represents an outer tub, constructed preferably of wood, and B represents an interior iron or other suit able sheet-metal tub, which i-s arranged within the. outer tub in a manner to provide a space, C, around and under the inner metal tub.

The upper end of the wood tub A is provided with a groove, into which a flange turned over from the tcp oi' the metal tub may be arranged to lit tightly, and ajoint, b, of metal tubing may be united to the top of the -tub B, and provided with a flange, C, resting on the top ofthe tub A.

D represents a cover of wood, made in three parts, the middle portion being permanently secured to the top, and the parts Dl and D2 arc hinged to it. T.he joints between the several parts are packed with rubber, 0r other suitable packing, d, and a strip of similar 4packing is secured to theunder outer fece of the cov-er, where it hears upon the top ofthe tub. l

e'represents clamps, whereby the cover is secured to Vthe flange of' the metal tub, so as to constitute a hermetically-tight joint, and the flangea of the metal t-ub is fitted hermetically in the groove of the tub A.

The movable portions D and D2 may be raised for filling the tub, or foreiecting a passage into it'for any purpose.

E represents a steam-pipe, provided with the branches E1 and E2, for conveying steam into the space C.

F represents a munholc opening into the bottom of the metal tu-b through the wood bottom of the tub A,

for cleaning out the grain. It is provided with a wood plug,f, and a metal cap, f', and tightened up in a suitable manner by a sct-screw, and elastic or other suitable packing.

G represents a pipe for drawing oi the wort after it has been filtered through a strainer, arranged over the mouth of the pipe in the bottom of the tub B.

H represents a pipe for drawing oil' the water resulting from condensation in the space C.l Irepreseuts an air-pump, arranged upon the top ofthe tub for compressing the air in the tub, to facilitate the operation of preparing the mash and assist the separation and filtration of the wort, after the rnashing process has been completed.

The apparatus for stirring the mash maybe operated in any suitable manner from a shaft passing through the stationary4 portion of the cover, or from the side of the tub.

In iig. 3 I have shown a rnodic'ation of the means of attaching the cover. Instead of placing it on the top and providing for obtaining ingress ,into thetub by a hinged portion of' the same, I have provided for fitting the edge ofthe cover into the channel inthe upper end of the wood portion of the tub,.wherein the iiauge a of the metal tub is' fitted, effecting the tightening of both joints by the hoops of the wood tub, and I provide for entrance into the tub by thc man-hole K in the cover.

Figs. 4 and 5 represent another modification, wherein the cover is made whole, and rests upon the top of the tub, and is secured thereto by clamps, as in iig. 1. In this example I have provided for obtaining access to the tub by raising the cover from it by cords and pulleys, which may be suspended from the beams above the tub. When thismcthod of opening is adopted, thestirring-apparatusmay be operated from the side, as shown in red in iig. 5.

t will be seen that by means ofthe arrangements above described access may be readily had to the interior, while the washing process is being'eiicctcd; also that the operation of charging the tub through the top and discharging through the bottom, may be eiected withoutinconvenience from the steam or hot water; also that the heating ofthe mash may be more readily eiiccted by the application ofthe steam around the exterior surface of the metal tub, and upon the surface of the mash within the same; also, that by reason of the hermetical joints', the heating may be more rapidly eli'ccted, and the pneumatic pressure may be applied whenever neces sary to drain or exhaust the wort from the grainswhich may thereby be effected within such given time as may be deemed necessary by the operator. Also, that by rncans of the arrangements described the process of converting the starch into sugar (the temperature of which vproee'sslies within the limits of few degrees) is rendered sure, safe, and controllable by the operator, and for these very reasons all danger' ofthe formation of that greatest oi' ,all enemies the brewer has to contend with, the pernicious lactic acid, is infallibly prevented.

Having thus 'described my invention, I claim as new, and desire tov secure by Letters Patent--4 1. The combina-tionall the tub A. with thc tub B, when constructed and arranged, substantially as and for the purpose described.

2. The combination, with the tubs A and B, of a cover, when arranged to hermetically close the openings to both tubs, substantially' as and for the purpose described.

3. The combination, with the tubs A andB, ofthe heating-pipe E, when arranged substantially as and for the purpose described.

4. The combination, with an hernietically-closed mash-tub, substantially such as herein described, of a means for compressing the air therein, as and for the purpose described.

5. The combination, with the mash-tubs A and B, of a hinged cover, D, when arranged to be hermetically secured to the tubs, substantially as andjfor the purpose described.

6. rEhe combination, with the mash-tubs A and B,ef the cover, when arranged to hermetic'a'lly close the same, as shown in iig. 3, substantially as and for the purpose described.

7. The combination, with the tubs A and B, 4of the man-hole appliances F, pipes G and H, when all oonstructed and arrangcdsubstantially as and for the purpose described.

' LEOPOLD KLEE.

Witnesses A, S. NICHOLSON, Jas. SHARP. 

